Reactant source vessel



FIG. 1 is a top perspective view of a reactant source vessel of the present invention;

FIG. 2 is top view thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is a cross-sectional side view thereof, taken along the line 4—4 of FIG. 2.

The bottom view has been omitted and forms no part of the claimed design.

The ornamental design which is claimed is shown in solid lines in the drawings. Any broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a reactant source vessel, as shown and described. 